CN101837416A - Load-deflection resistant loading system for free hydraulic forging press - Google Patents
Load-deflection resistant loading system for free hydraulic forging press Download PDFInfo
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- CN101837416A CN101837416A CN 201010161387 CN201010161387A CN101837416A CN 101837416 A CN101837416 A CN 101837416A CN 201010161387 CN201010161387 CN 201010161387 CN 201010161387 A CN201010161387 A CN 201010161387A CN 101837416 A CN101837416 A CN 101837416A
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Abstract
The invention discloses a load-deflection resistance loading system for a free forging hydraulic press, and relates to the forging hydraulic press. The invention solves the problem that in the conventional loading system for the free forging hydraulic press, as a plunger and a movable cross beam are in rigid connection, the movable cross beam is subjected to eccentric load in the eccentric forging process to accelerate abrasion of a guide copper sleeve and a seal to cause earlier failure and leakage of seal of a main working cylinder so as to cause poor eccentric forging resistance of the loading system. The loading system for transmitting forging pressure of the free forging hydraulic press is characterized in that the combination movable cross beam with an overlong guide structure, fully enclosed wedge-shaped plane guide devices which can adjust gaps of the peripheries of upright posts, a double concave ball hinged short cylindrical rocker shaft device of which the main plunger is connected with the movable cross beam, and a levelness sensor monitoring device of the movable cross beam are adopted on the free forging hydraulic press. The load-deflection resistant loading system not only can be applied to various free forging hydraulic presses, but also can be popularized and applied to other vertical hydraulic presses suitable for the process.
Description
Technical field
The present invention relates to hydraulic forging press.The loading system that particularly relates to free-forging hydraulic.
Background technology
Free-forging hydraulic is the key equipment of extensive use during forging is produced.Traditional three beams, four column type free-forging hydraulics, the main working cylinder plunger of its loading system and moved cross beam adopt mostly and are rigidly connected, and directly insert in the moved cross beam plunger lower end, with gland and bolting.When mechanical analysis and calculating, usually suppose that the forging place does not have the side direction horizontal reacting force, do not hinder moved cross beam to rotate; The gap of the tension force post fairlead of both sides is identical, is subjected to eccentric load and when tilting, the tension force post of both sides is stressed evenly at moved cross beam.
In the actual production, especially when off-centre is forged, moved cross beam is subjected to eccentric load, rigidly connected main plunger will be followed moved cross beam and be tilted together, make main working cylinder guiding copper sheathing and sealing place often bear side direction horizontal thrust or a pair of couple, thereby aggravated the wearing and tearing of guiding copper sheathing and sealing, caused main working cylinder sealing initial failure and leakage phenomenon.
Simultaneously, the gap of the round tension force post fairlead of both sides is not the same, and the side-thrust that causes because of unbalance loading that two tension force posts are born also can not equate.The point contact stress state of the circular guide pin bushing of moved cross beam and the uneven wear and the guiding clearance that cause increase, two root posts of either side all can not be evenly stressed, under the extreme case, will cause single upright column to bear whole side-thrusts, and be vulnerable to most destroy and rupture.And whole mechanical load system is not provided with safety monitoring device, only can just be found when fracture takes place the tension force post.Thereby guiding accuracy and kinematic accuracy during forging are low, anti-eccentric ability of forging, the dimensional accuracy and the forging quality of forging are low, maintenance funds expenditure and equipment life the life cycle costing height.
Though the press main plunger that has has adopted single self-aligning spherical support to connect, because the two instantaneous center of rotation of the protruding sphere place of moved cross beam and plunger can not overlap, thereby single self-aligning spherical support connects the effect that improves lead copper sheathing and sealing wear that do not have.The plunger that has also adopted two sphere intermediate bars to connect that has, but structure overlength complexity, installation and measuring difficulty, cost height.Simultaneously, because these press still are traditional three beams, four column type guide frames, and be the application of single technology, so, fundamentally do not change main plunger and the stress of moved cross beam under the eccentric load operating mode, just can not improve the anti-eccentric ability of forging of whole mechanical load system yet.
Summary of the invention
The object of the invention is to overcome the shortcoming that prior art exists, a kind of loading system of free-forging hydraulic anti-bias load is provided, solve traditional three beams, four column type free-forging hydraulics, because the main plunger of loading system and moved cross beam adopt and are rigidly connected, moved cross beam is subjected to eccentric load during eccentric the forging, the wearing and tearing of guiding copper sheathing and sealing have been aggravated, cause main working cylinder sealing initial failure and leakage, even column is damaged and ruptures, cause the anti-eccentric problem of forging ability of loading system.
Concrete technical scheme of the present invention is:
A kind of loading system of free-forging hydraulic anti-bias load comprises: entablature, moved cross beam, two full prestressing rectangle columns, sill and kicker cylinders.Two described full prestressing rectangle columns are affixed with described entablature, sill respectively, described moved cross beam and described full prestressing rectangle column are slidingly matched, described entablature is equipped with main working cylinder, the plunger of main working cylinder is connected with moved cross beam, is fixed with upper padding plate below the described moved cross beam.It is characterized in that: described main working cylinder is made up of a middle cylinder and two side cylinders, be fixed in side by side with double-screw bolt on the center line of entablature, three described main working cylinders comprise: cylinder body, main plunger, guide pin bushing, sealing, the Lower Half of three described main plungers is a hollow body, epirelief ball ring, concave-concave ball-joint formula short cylindrical rocker shaft device are housed in the hollow body, and described concave-concave ball-joint formula short cylindrical rocker shaft device is connected with described moved cross beam; Described moved cross beam is a kind of combined movable crossbeam that the overlength guiding is arranged, it is made up of middle cross beam, two leading trucks and two guide beams, key and pull bars, by described key and described pull bar with two described leading trucks respectively with the affixed combined movable crossbeam that becomes a described full prestressing rectangle column of sealing of described middle cross beam and described guide beam; At least 4 orthogonal cleat planes guiders are installed at position about around described moved cross beam and corresponding each leghole of described full prestressing rectangle column respectively; The diagonal angle setting contains the moved cross beam levelness sensor supervising device of two absolute value encoders between described moved cross beam and the described entablature; Two described kicker cylinders are separately positioned on the outside of two described full prestressing rectangle columns, form by cylinder body, plunger, last ball dumpling seat, following ball dumpling seat, adpting flange, described cylinder body is fixed on by last ball dumpling seat on the lower plane of leading truck of moved cross beam, described plunger is fixed on the sill by following ball dumpling seat, and described plunger is provided with the adpting flange of turnover oil-piping.
Described concave-concave ball-joint formula short cylindrical rocker shaft device is made up of epirelief ball ring, concave-concave ball-joint formula short cylindrical rocker shaft, semi-open type gland and following protruding ball ring, described epirelief ball ring, concave-concave ball-joint formula short cylindrical rocker shaft, semi-open type gland and following protruding ball ring are installed in the Lower Half hollow body of described main plunger successively, and described semi-open type gland is fixed on described concave-concave ball-joint formula short cylindrical rocker shaft and following protruding ball ring on the described moved cross beam.
Described cleat planes guider is by fixedly swash plate seat, movable wedge, self-lubricating slide plate, wear-resisting guide plate, adjustment screw, pad are formed, described fixedly swash plate seat is fixed in the guide holder groove of described moved cross beam, described movable wedge and fixing swash plate seat wedge-like engagement, a self-lubricating slide plate is installed on the described movable wedge, described self-lubricating slide plate is slidingly matched with being fixed on described full prestressing rectangle column wear-resisting guide plate all around, is provided with adjustment screw and pad between described fixedly swash plate seat and the described movable wedge.
Guiding clearance between the wear-resisting guide plate around self-lubricating slide plate on the described movable wedge and the described full prestressing rectangle column, outer side clearance is 0.2～0.3mm, interior side clearance is 1.5～2.5mm.
Special-purpose V-type circle combination sealing is adopted in sealing between described main plunger and the described guide pin bushing.
All have lubrication groove and connecting hole on described epirelief ball ring and the following protruding ball ring, be connected with grease concentrating lubricating system.
The length of two described leading trucks is 1.05～1.15 times of moved cross beam impulse stroke.
The present invention compared with prior art has the following advantages and beneficial effect:
The present invention be different from forge free-forging hydraulic that factory now uses in order to load with the structure of the plunger that transmits main working cylinder forging force and moved cross beam, to be connected and the guiding form.Guiding accuracy and kinematic accuracy when adopting the present invention will effectively improve forging prolong sealing life; Strengthen anti-eccentric ability of forging, the forging eccentric throw of permission is doubled; Improve the dimensional accuracy and the forging quality of forging, reduced maintenance funds expenditure and equipment life life cycle costing.
Principle of the present invention and structure not only can be applied to free-forging hydraulic, and can be applied to be fit on other vertical hydraulic press of technology, and can be to transforming at traditional forging press of operation.The present invention will directly cause a kind of realization with modern free-forging hydraulic of energy-saving and cost-reducing advantage.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of concave-concave ball-joint formula short cylindrical rocker shaft device;
Fig. 3 is the B-B cutaway view of Fig. 1;
Fig. 4 is the B-B cutaway view (structural representation of cleat planes guider) of Fig. 3;
Fig. 5 is the levelness sensor supervising device control block diagram of moved cross beam.
Fig. 6 is the structural representation of kicker cylinder.
Below in conjunction with accompanying drawing the present invention is made specific description.
The specific embodiment
As shown in Figure 1, a kind of loading system of free-forging hydraulic anti-bias load, main working cylinder is made up of a middle cylinder 1 and two side cylinders 2, is fixed in side by side with double-screw bolt on the center line of entablature 10.The forging force that each working cylinder produces passes to moved cross beam 4 by the concave-concave ball-joint formula short cylindrical rocker shaft device 3 in the main plunger.
Moved cross beam is made up of middle cross beam 4-1, two leading truck 4-2 and two five of guide beam 4-3, connects by some groups of key 4-4 and fastening pull rod 4-5 and is tightened to a combined movable crossbeam 4 that is slidingly matched with full prestressing rectangle column 5.Be fixed with upper padding plate 6 below the moved cross beam, the cleat planes guider 7 of at least 4 orthogonal adjustable clearances is installed at position up and down around moved cross beam 4 and full prestressing rectangle or square-section column 5 corresponding each leghole respectively.
Two plunger type kicker cylinder 8 flip-over types are installed in the lateral surface of two root posts, and cylinder body 8-1 and leading truck 4-2 fix, and plunger 8-2 is fixed on the sill 9.
As shown in Figure 1, 2, main working cylinder is made up of cylinder body 1-1, main plunger 1-2, guide pin bushing 1-3, sealing 1-4 and plunger gland etc.The main plunger Lower Half is a hollow body, concave-concave ball-joint formula short cylindrical rocker shaft device 3 is housed in the hollow body, and described rocker shaft device 3 is made up of epirelief ball ring 3-1, concave-concave ball-joint formula short cylindrical rocker shaft 3-2, semi-open type gland 3-3 and following protruding ball ring 3-4 successively.Described epirelief ball ring 3-1, concave-concave ball-joint formula short cylindrical rocker shaft 3-2, semi-open type gland 3-3 and following protruding ball ring 3-4 are installed in the Lower Half hollow body of described main plunger 1-2 successively, and described semi-open type gland 3-3 is fixed on described concave-concave ball-joint formula short cylindrical rocker shaft 3-2 and following protruding ball ring 3-4 on the moved cross beam 4.
The power that main working cylinder produces passes to epirelief ball ring 3-1 by main plunger 1-2, passes to moved cross beam 4 by protruding ball ring 3-4 under the concave-concave ball-joint formula short cylindrical rocker shaft 3-2 warp again.When eccentric load acts on down protruding ball ring via moved cross beam 4, because the adaptability of radial type rocking bar is rotated, the offset loading force that is produced when making eccentric the forging is delivered to entablature through column, reduced horizontal thrust and countertorque effectively, thereby prolonged the life-span of sealing and guiding oil cylinder guide pin bushing and sealing place.
Shown in Fig. 1,3,4, the combined movable crossbeam 4 by leading truck 4-2, guide beam 4-3 and middle cross beam 4-1 constitute is closed two hollow, rectangular column 5 peripheries.At least 4 orthogonal cleat planes guiders 7 are installed around moved cross beam 4 every root post holes.The fixedly swash plate seat 7-1 of this device by bolting in the guide holder groove of combined movable crossbeam 4, casting tin bronze alloys slide plate 7-3 with good self-lubricating property is installed, by being fixed in full prestressing rectangle or square-section column wear-resisting guide plate 7-4 guiding all around on movable wedge 7-2.The copper alloy slide plate of movable wedge and the guiding clearance between the wear-resisting guide plate of column are adjusted by one group of adjustment screw 7-5 and pad 7-6, and outer side clearance is 0.2～0.3mm, and the inboard is 1.5～2.5mm.
Shown in Fig. 1,3,5, two absolute value encoders 11 are installed on the lower plane diagonal of entablature, an end of its motion is corresponding vertically to be fixed with moved cross beam.The travel position of moved cross beam all can detect in real time by two encoders are online under any operating mode, and carries out signals collecting and real-time operation by PLC, carries out digitlization and show on operating desk host computer screen.
PLC offers the comparison controller of position closed loop control system with the calculating mean value of the numerical value that the records position feed back signal as moved cross beam, carries out the Position Control and the adjusting of moved cross beam.
The difference of PLC computing can indicate the operation level degree of moved cross beam.If during the critical value that difference equals to set, show the caution that overflows on the machine screen then on the throne, when surpassing the limiting value of allowing, will stop press work as if the position difference.At this moment, require the maintenance personal must check and adjust the guiding clearance of guide plate, with levelness and the kinematic accuracy of guaranteeing moved cross beam.
As shown in Figure 6, kicker cylinder 8 is made up of cylinder body 8-1, plunger 8-2, last ball dumpling seat 8-3, ball dumpling seat 8-4, adpting flange 8-5, described cylinder body 8-1 is fixed on by last ball dumpling seat 8-3 on the lower plane of guide beam 4-3 of moved cross beam 4, described plunger 8-2 is fixed on the sill 9 by following ball dumpling seat 8-4, and described plunger 8-2 is provided with the adpting flange 8-5 of turnover oil-piping.
Be further described again with regard to concrete technical scheme of the present invention below:
1) a kind of loading system of free-forging hydraulic anti-bias load, it comprises free-forging hydraulic in order to loading with the structure of the plunger that transmits main working cylinder forging force and moved cross beam, to be connected and the guiding form, and the detection technique of moved cross beam levelness.The loading system of transmitting forging force as free-forging hydraulic comprises: on the free-forging hydraulic of full prestressing rectangle or square-section column frame, adopt the combined movable crossbeam with overlength guide frame; The cleat planes guider of adjustable clearance around the totally-enclosed column periphery; The concave-concave ball dumpling that main plunger is connected with moved cross beam connects formula short cylindrical rocker shaft device; And the levelness sensor supervising device of moved cross beam.
2) described combined movable crossbeam with overlength guide frame is by middle cross beam, two lengthening ㄈ shape leading trucks and two adaptive directed beams totally five combining structures that constitute.Adopt the pre-clamping tool of dedicated hydraulic, with fastening pull rod leading truck is connected the combined movable crossbeam that is tightened to a sealing column with middle cross beam respectively with guide beam by some groups of keys.The length of two lengthening ㄈ shape leading trucks is 1.05～1.15 times of moved cross beam impulse stroke; Two split type adaptive directed beams are installed in the moved cross beam inboard, because the effect of pretension bolt, can do lateral displacement adaptively along with the distortion of the transverse curvature of column, guide plate is wherein being kept and column applying guiding state, with the offset loading force transmission to column.This have a strong anti-eccentrically loaded combined movable crossbeam, and the guiding length of the moved cross beam that both extended has improved the dimensional accuracy of kinematic accuracy and forging, has avoided the stress concentration phenomenon of monoblock type moved cross beam again, has improved the stress of column.In addition, top and the bottom provide two groups at least 4, how can reach 8 orthogonal planes around moved cross beam and full prestressing rectangle or corresponding each leghole of square-section column, for the cleat planes guider that adjustable clearance is installed.Anvil whirligig installing hole 13 on the installing hole 12 of anvil clamping device and one in moved cross beam, also providing 4.Lower plane at moved cross beam is fixed with a upper padding plate, and the two adopts 4 keys location and screw fastening means to link together.Catch fire for the oil that prevents the possibility seepage flows on the forging, the plane is provided with the leakage oil-containing groove 14 of a sealing on moved cross beam, by pipeline below ground is received in leakage of oil.
3) the cleat planes guider of adjustable clearance around the described totally-enclosed column periphery is made up of a fixing swash plate seat and a movable wedge.The swash plate seat by bolting in the guide holder groove of combined movable crossbeam, casting tin bronze alloys slide plate with good self-lubricating property is installed, by being fixed in full prestressing rectangle or square-section column wear-resisting guide plate guiding all around on movable wedge.Compare with the traditional round guide pin bushing, contact area is big, and spigot surface forces down, and guiding is accurate, and anti-eccentric load ability is strong.The guiding clearance of cleat planes guider is easy to adjust, and by one group of gap of regulating between trip bolt and pad adjustment moved cross beam slide plate and the wear-resisting guide plate of column, outer side clearance is 0.2～0.3mm, and the inboard is 1.5～2.5mm.
Kinematic accuracy and guide plate life-span that the planar guide structure of employing drier oil Centralized and Automatic Lubrication system and low surface pressing has improved moved cross beam make moved cross beam keep rigid motion on column, have improved the dimensional accuracy of forging.
4) described main working cylinder is three isometrical or not isometrical downward adding pressure type plunger cases, is fixed in side by side on the entablature center line by double-screw bolt.Special-purpose V-type circle combination sealing is adopted in the sealing of each plunger between guide pin bushing and gland.The guide pin bushing inwall has helicla flute, at the oral area of oil cylinder dust ring is housed, and gland is provided with the emptying passage.
Described plunger bottom is a hollow body, a protruding ball ring and concave-concave ball-joint formula short cylindrical rocker shaft have respectively been installed therein, by means of the semi-open type gland short cylindrical hinge is fixed on the protruding ball ring in the moved cross beam, movable joint as being connected between moved cross beam and the main plunger can allow moved cross beam that the bigger free degree is arranged.All have lubrication groove and connecting hole on the protruding ball ring, be connected with grease concentrating lubricating system.
The design of the ball pivot axle radius of gyration will be coordinated with the radius of gyration of moved cross beam when the eccentric load.During work, the forging force on the main plunger is delivered to moved cross beam by the radial type rocking bar; Because the adaptability of radial type rocking bar is rotated, the offset loading force that is produced when making eccentric the forging is delivered to entablature through column, has reduced horizontal thrust and countertorque to oil cylinder guide pin bushing and sealing place effectively, thereby has prolonged the life-span of sealing and guiding.
5) the levelness sensor supervising device of described moved cross beam is that the diagonal angle is provided with two absolute value encoders, the position of online real-time detected activity crossbeam between moved cross beam and entablature.With the calculating mean value of the numerical value that the records feedback signal as position closed loop control, two differences indicate the operation level degree of moved cross beam.Position error signal can show and the caution that overflows that on operating desk host computer screen press will be shut down when difference surpasses feasible value in digitlization.
6) two described kicker cylinders are plunger case flip-over type structure, are arranged on the lateral surface of two root posts, by two groups of ball dumpling seats and screw cylinder body are fixed on the lower plane of the guide beam of moved cross beam respectively, and plunger is fixed on the sill.This structure can effectively prevent to cause under the eccentric load operating mode infringement to kicker cylinder.Adopt certain thickness heat-insulating material and steel plate respectively two kicker cylinders to be wrapped up, prevent the heat radiation of steel ingot, and play and prevent the corrosion function of oxide skin the oil cylinder plunger together with the heat-insulating shield that is fixed on the column.
Two kicker cylinders are arranged on the sill,, have shortened kicker cylinder control pipeline, reduced pipeline fluid additional mass, help improving system's hydraulic natural frequency and Frequency Response near backhaul accumulator station and backhaul control valve piece; Avoid kicker cylinder to be arranged at the top-heavy phenomenon of entablature, increased the stability of press; When moved cross beam is fallen the limit inferior position, can be by the kicker cylinder plunger as mechanical support.
Claims (7)
1. the loading system of a free-forging hydraulic anti-bias load, comprise: entablature (10), moved cross beam (4), two full prestressing rectangle columns (5), sill (9) and kicker cylinder (8), two described full prestressing rectangle columns (5) respectively with described entablature (10), sill (9) is affixed, described moved cross beam (4) is slidingly matched with described full prestressing rectangle column (5), described entablature (10) is equipped with main working cylinder, the plunger of main working cylinder is connected with moved cross beam (4), be fixed with upper padding plate (6) below the described moved cross beam (4), it is characterized in that: described main working cylinder is made up of a middle cylinder (1) and two side cylinders (2), be fixed in side by side with double-screw bolt on the center line of entablature (10), three described main working cylinders comprise: cylinder body (1-1), main plunger (1-2), guide pin bushing (1-3), sealing (1-4), the Lower Half of three described main plungers (1-2) is a hollow body, concave-concave ball-joint formula short cylindrical rocker shaft device (3) is housed in the hollow body, and described concave-concave ball-joint formula short cylindrical rocker shaft device (3) is connected with described moved cross beam (4); Described moved cross beam (4) is a kind of combined movable crossbeam that the overlength guiding is arranged, it is made up of middle cross beam (4-1), two leading trucks (4-2) and two guide beams (4-3), key (4-4) and pull bar (4-5), by described key (4-4) and described pull bar (4-5) with two described leading trucks (4-2) respectively with the affixed combined movable crossbeam that becomes a described full prestressing rectangle column of sealing (5) of described middle cross beam (4-1) and described guide beam (4-3); At least 4 orthogonal cleat planes guiders (7) are installed at position about around described moved cross beam (4) and corresponding each leghole of described full prestressing rectangle column (5) respectively; The diagonal angle setting contains the moved cross beam levelness sensor supervising device of two absolute value encoders (11) between described moved cross beam (4) and the described entablature (10); Two described kicker cylinders (8) are separately positioned on the outside of two described full prestressing rectangle columns (5), form by cylinder body (8-1), plunger (8-2), last ball dumpling seat (8-3), ball dumpling seat (8-4), adpting flange (8-5), described cylinder body (8-1) is fixed on by last ball dumpling seat (8-3) on the lower plane of leading truck (4-2) of moved cross beam (4), described plunger (8-2) is fixed on the sill (9) by following ball dumpling seat (8-4), and described plunger (8-2) is provided with the adpting flange (8-5) of turnover oil-piping.
2. according to the loading system of the described free-forging hydraulic anti-bias load of claim 1, it is characterized in that: described concave-concave ball-joint formula short cylindrical rocker shaft device (3) is by epirelief ball ring (3-1), concave-concave ball-joint formula short cylindrical rocker shaft (3-2), semi-open type gland (3-3) and following protruding ball ring (3-4) are formed, described epirelief ball ring (3-1), concave-concave ball-joint formula short cylindrical rocker shaft (3-2), semi-open type gland (3-3) and following protruding ball ring (3-4) are installed in the Lower Half hollow body of described main plunger (1-2) successively, and described semi-open type gland (3-3) is fixed on described concave-concave ball-joint formula short cylindrical rocker shaft (3-2) and following protruding ball ring (3-4) on the moved cross beam (4).
3. according to the loading system of the described free-forging hydraulic anti-bias load of claim 1, it is characterized in that: described cleat planes guider (7) is by fixing swash plate seat (7-1), movable wedge (7-2), self-lubricating slide plate (7-3), wear-resisting guide plate (7-4), adjustment screw (7-5), pad (7-6) is formed, described fixedly swash plate seat (7-1) is fixed in the guide holder groove of described moved cross beam (4), described movable wedge (7-2) and fixing swash plate seat (7-1) wedge-like engagement, a self-lubricating slide plate (7-3) is installed on the described movable wedge (7-2), described self-lubricating slide plate (7-3) be fixed on described full prestressing rectangle column (5) wear-resisting guide plate (7-4) all around and be slidingly matched, be provided with adjustment screw (7-5) and pad (7-6) between described fixedly swash plate seat (7-1) and the described movable wedge (7-2).
4. according to the loading system of the described free-forging hydraulic anti-bias load of claim 3, it is characterized in that: the guiding clearance between self-lubricating slide plate (7-3) on the described movable wedge (7-2) and described full prestressing rectangle column (5) the wear-resisting guide plate (7-4) all around, outer side clearance is 0.2～0.3mm, and interior side clearance is 1.5～2.5mm.
5. according to the loading system of the described free-forging hydraulic anti-bias load of claim 1, it is characterized in that: special-purpose V-type circle combination sealing is adopted in the sealing (1-4) between described main plunger (1-2) and the described guide pin bushing (1-3).
6. according to the loading system of the described free-forging hydraulic anti-bias load of claim 2, it is characterized in that: all have lubrication groove and connecting hole on described epirelief ball ring (3-1) and the following protruding ball ring (3-4), be connected with grease concentrating lubricating system.
7. according to the loading system of the described free-forging hydraulic anti-bias load of claim 1, it is characterized in that: the length of two described leading trucks (4-2) is 1.05～1.15 times of moved cross beam impulse stroke.
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| CN102059309A (en) * | 2010-11-26 | 2011-05-18 | 天津市天锻压力机有限公司 | Free hydraulic forging press |
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| CN102393314A (en) * | 2011-10-21 | 2012-03-28 | 煤炭科学研究总院 | Hydraulic support comprehensive property test device |
| CN102873244A (en) * | 2012-10-23 | 2013-01-16 | 中国第二重型机械集团（德阳）万信工程设备有限责任公司 | Bundled die forging press structure and method for controlling vertical coaxiality of bundled die forging press structure |
| CN102873244B (en) * | 2012-10-23 | 2014-12-17 | 中国第二重型机械集团（德阳）万信工程设备有限责任公司 | Bundled die forging press structure and method for controlling vertical coaxiality of bundled die forging press structure |
| CN102989961A (en) * | 2013-01-05 | 2013-03-27 | 青岛嘉龙自动化设备有限公司 | Forging press and method for assembling plunger cylinder thereof |
| CN109304414A (en) * | 2017-07-27 | 2019-02-05 | 上海五钢设备工程有限公司 | The clearance adjustment method of the walking beam of fast forging equipment |
| CN112895579A (en) * | 2021-01-22 | 2021-06-04 | 一重集团大连工程技术有限公司 | Three-cylinder direct-acting movable cross beam |
| CN112895579B (en) * | 2021-01-22 | 2022-03-29 | 一重集团大连工程技术有限公司 | Three-cylinder direct-acting movable cross beam |
| CN113664135A (en) * | 2021-08-23 | 2021-11-19 | 浙江丰诚智能科技有限公司 | Double-column free forging hydraulic unit |
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